by anger at an amateurish, low budget film made in los angeles and promoted by the koran-burning gas or the, terry jones of florida. >> there must be an action. >> reporter: the film is clearly meant to denigrate the muslim prophet muhammad, depicting him as a child molester. >> there's really no possibility of maintaining a lid on the kind of provocative material like this film from getting out into the region. >> reporter: for three days now, protests have been raging across the arab world. it started on tuesday, the anniversary of 9/11, when a group scaled the walls of the u.s. embassy in cairo, tore down the stars and stripes and raised black flags reading "there is no god but allah." by tuesday night, the violence was spreading and deepening. the american consulate in benghazi, libya, was in flames. and the ambassador and three other americans, dead, after militants attacked with gun fire and rocket-propelled grenades. by wednesday, the crowd outside the embassy in cairo had grown larger and the mood, ugly. the rhetoric now, a world away from the heady days of the arab spring last year